Double-bar arch-band



1. E. CANNING.

DOUBLE BAR ARCH BAND.

.APPLICATION FILED FEB. 4,1919.

1,885,775. Patented July 26, 1921. l

2 SHEETS-SHEET l.

@bio/1MM.

i WM

J. E. CANNING.

DOUBLE BAR ARCH BAND.

APPUCATION FILED FEB. 4.1919.

1,385,775. Patented July 26,1921,

2 SHEETS-SHEET 2.

.Z E (2a/727mg.

/ INVENTOR.

V ATTORNEY.

` JOHN n. Giannino, or DENVER, COLORADO.

Specification of Letters Patent.

DOUBLE-BAR ARCH-BAND.

Patented July 26', 1921.

Application filed February 4, 1919. Serial'No. 274,833.

To all who/m t may concern Be it known that I, JOHN E. CANNING, a citizen of the United States, residing at the city and county of Denver and State of Colorado, have invented certain new and useful Improvements in Double-Bar Arch- Bands; and I do declare the following toy be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specilication.

My invention relates generally to toothstraightening devices in the practice of orthodontia, and more specifically to a special construction of arch, or arch band, the peculiar feature of which is that in addition to the regular front portion or bar of the arch, a second, or auxiliary lioating bar is employed, being suitably spaced from the main bar and connected vtherewith by vertically disposed cross pieces or standards, which are equipped intermediate their extremities with hooks for a purpose hereinafter described. The arch is anchored in the usual way, being provided with rearwardly-extending threaded parts or stems,

`each of which enters an anchorage connected ,with one of the back teeth or molars. As illustrated in the drawing, each threaded extension of the arch band is slid- .able in a tube anchored on the rearmost molar, a nut being threaded on each stem forward of the tube and readily movable into engagement with the anchorage, as circumstances may require. f

The auxiliary arch bar ormember is adapted to act upon the teeth near their points or outer extremities; while ligatures are connected with the same teeth at or near the gums and connected with the main bar of the arch, the said ligatures having a tendency to-tip the apex of the root forward, whereby the reaction is placed on the lower bar, which holds the lower portion of the tooth from advancing-the term lower in this connection being used with special reference to the employment of the arch band on the teeth of the upper jaw. The hooks with which the cross standards are provided, as hereinbefore indicated, may be utilized for supporting springs adapted for use in elongating certain of the teeth,

.wardly-extending threaded as the icuspids, these springs being employed 1n connection with caps, which are cemented tothe teeth` to be elongated and are provided with projections adapted to be engaged by the springs.

aving briefly outlined my improvement, I will proceed to describe the same in detall, reference being made to the accompanying drawing, in which is illustrated an embodiment thereof. In this drawing:

Figure l is a perspective view of my improved double bar arch band, shown on an enlarged scale, for purposes of clearer illustration.

Fig. 2 is a perspective view of one of the springs employed in connection with my improved band, the spring being shown on a greatly enlarged scale.

' Fig. 3 is a perspective view on an enlarged scale, illustrating my improved device applied to the teeth of the upper jaw.

Fig. 4L is a sectional view, device employed in tipping ing one ofthe incisore. v f

Fig. ,5 is an enlarged detail showing one of the springs in position.

ig. 6- is a similar detail omitting the spring.

F ig 7 is a detail showing the integral construction of the hook before the hook is bent entirely into operative position. y

The same reference characters indicate the same` parts in all the views.

Let the numeral 5 designate my improved or straightenarch band,considered in itsv entiretyand composed of `a main front bar, 6, and an auxiliary bar, 7, connected with the main bar by standards, 8, upon which are mounted hooks,9, `the main bar having rearparts, .10, .carrying nuts, 12, which are adapted to be screwedagainst a suitable anchorage illustrated in Fig.4 3, and including a band, 23, passed around one-of the molars, 24, the band having sleeves, 25 and 26, with which illustrating the a tube, 27, is connected, a nut, 18, being employed and shown in contact with the sleeve 26. It will be understood that any suitable anchorage for the extremities of the threaded extensions7 10, of the device may be employed. The auxiliary bar, 7, is free at its extremities, and therefore adapted to have freedom of movement, as may be required for tooth-straightening purposes.

i the cuspid teeth, employ-ed as shown in p lengthening a cuspid tooth. This operation,

Vthe points inwardly, while the ligatures are acting to of this spring bears against the bar 7, while its longer extremity or portion 17 ,engages a projection 28 onV a cap, 29,'which, as shown in thedrawing, is cemented on oneof 20. This :spring, when Fig. 3, is utilized for may be carried on simultaneously, withthe use of the double bar feature for straighten ing the incisor teeth also, as illustrated in Fig. 3. Ligatures, 21, are passed around the incisors close tothe gums, and then around the main bar, 6, ofthe arch band, which exerts a tension on the-ligatures to tip'the apex of the root forward, while the bar 7 of the band actsupon the incisors near their points V.and has a tendency to move them inwardly to their normal or approxi- V,mately vertical position. By virtue of this construction and arrangement, the function of the double-bar feature of the band ,is apparent, since the member A7 is pressing or free extremities ofthe teeth tip the roots forwardly, or in the opposite direction, the conjointA action of the two barsserving torestore the teeth-to their normal position. Y

-Withthis arch, the roots, of the incisois, for instance, are not only easily .tipped forwward into a perpendicular plane, butV can be moved forward Vany distance in .an upright position by turning the bar nut, 12back yagainst the anchorage or thenut, 18, thereof. When the arch Vis'adjusted,`the bar, 7 comes in contact with the incisal edges,

' while the bar stands away from the gingi-` l Vfro'ntQbar spaced from and connected fwith val, as shown iny Fig. 4; With the" arch in this position, Vthe bar 6( is sprung lingually by twisting the extremities of the wire ligature, 21. The ligature wires should gonnder the' freevmargin of the gums, or around' the necks of the incisors', This prevents the `wire from, working down the lingual incline lof the tooth and becoming loose.

The b21-r6 being ligated, as shown in Fig. 3, the apex of the root vof an incisor is tipped forward and the `reaction is on the auxiliary bar 7,which holds the lower portionfof the tooth Yfromy advancing. Itis easy toi undervwill be readily understood.

stand that if the upper barG, as shown in Fig.A 3, is sprung toward the teeth and the resistance is on the incisal edges, the root must be tipped forward while the Vpoint is moved inthe opposite direction, thus tending to correct the malformation. Aft r the teeth are tipped into a perpendicular lane, they canbe carried forward in an upright positionany distance by turning the nut 12 against the anchorage, after which the stems 10 can no longer move rearwardly through the anchorage tube, and any desired'tension may be obtained through the medium of the bar 6 for carrying the teeth forwardly, as

Greater tipping movement in the arch can lbe secured atV any time by grasping the arch with a pair of pliers at the junction of the cross standards, 8, and the bar 6and bending thelowe'r bar, 7, in a lingual direction. This, of course, must be done with the arch out of the mouth. By the employment vof the spring attachments, 13, which yare made rights and lefts, cuspids can be elongated simultaneously Vwith the valining of the incisors, as heretoforey indicated. The springs may be adjusted tothe hooks while the device is inthe mouth, but it is more convenient todoV this before Vplacing it on Lthe teeth. l

Havingthus described my invention, what Iv claim is: Y l

v 1. An arch band, whose front portionis composed oftwo spaced integral parts,- one part having` rearwardly-extending threaded j stems adapted to cooperate ,with 'suitable anchorage.

2. An arch band, having an auxiliary `frontbar spaced fromlandconnected with the main part of the band by transversely arranged parts, and springs mounted on the last named parts'andcoperating withthe band .for the purpose set forth.'V p

VAn archv band, having an auxiliary the main part of the band by transversely arranged parts, provided with hooks and springs mounted on the hooks and coperating with the band forv the purpose set forth. j, 4. An arch band-comprising a main bar havinga front portion, an vauxiliary front `bar shorter than the inainfbar spaced' therefrom and having free ends and Vtransverse parts connectingthe' auxiliary bar with the main bar at intermediatepoints."

In testimony, whereofI iX my signature. Y JOHN CANNING. 

